248 



diiced. Hemelytra often ample. Pulvilli between the claws of the 

 tarsi. (Corresponds with my Acridince.) 



Sec. 1. Hemelytra as long or longer than the abdomen : 



A. Antennae in each sex filiform : 



a. Thorax unicarinate : 



b. Thorax tricarinate : 



* Lateral carinae straight or nearly straight. . 

 ** Lateral carinse curved or angular. 



B. Antennae of the males clavate. 

 Sec. 2. Hemelytra very short. 



IL AcRiDiUM. — Antennae inserted under the eyes, sulj-approximate in front. 

 Eyes globose, somewhat prominent. Thorax (pronotum) prolonged pos- 

 teriorly. Hemelytra rudimentary. Pulvilli absent. (My TettigiruR.) 



Sec. 1. AiitenniE 14-jointed. 



Sec. 2. Antennae 12-jointed. 



Borck's arrangement is as follows : 



1. Ciu-soriae: 



a. Tarsi 3-jointed : 



Fam. I Forjiculina. 



b Tarsi 5-jointed : 



Fam. II Blattina. 



m 



2. Saltatoriae: 



* Tarsi not uniform ; the first joint of the posterior pair being unlike the 

 others : 



Fam. Ill Gryllodea. 



** All the tarsi normal ; similar in form : 

 ff. Tarsi 4-jointed : 



Fam. IV Locustina. 



b. Tarsi 3-jointed: 



Fam. V . - t Acridiodea. 



He considers the variations in the tarsi of more importance in classifica- 

 tion than the difference in the genital organs, and therefore places the Gryl- 

 lidcB and Locustidce in different sections. 



As his work contains but few species of AcrididcB, his subdivision of this 

 family is simple, and scarcely indicates what it would have been had the num- 

 ber been greater and the forms more varied. It is as follows : 



